Protective shield



FIG. 1 is a front view of a protective shield showing my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a bottom view thereof; and

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a perspective view showing a use state thereof.

The broken lines shown are included for the purpose of illustrating portions of the protective shield and form no part of the claimed design. The dot-dash-dot lines indicate the boundary of the claim. The entire design is transparent. 

CLAIM The ornamental design for a protective shield, as shown and described. 